First, we want to distribute the 2z to what's in the parentheses:

Then we need to distribute the negative sign outside of the parentheses in order to make it easier to solve and combine like terms:

Now we combine like terms. The '2z' and '-2z' cancel each other out, so:

Then we solve for z by dividing by -6 on both sides:

So now we know that z = -8.
7*7=49
since B is 7 times greater than A, so 7*7
Answer:
49
Step-by-step explanation:
90-51=49
Answer:
48
Step-by-step explanation:
Given: 
Now, solving it.
We first open parenthesis which is (b)
(17) = 
Next Multiply both side by 2
⇒ 816 = 
Now, we will divide both side by 17
∴ b